Energy Flow In Ecosystems Study Island

The Antarctic food web is less complex than other food webs around the world. There are fewer different species that are part of it. However, there are more of each species.

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According to the food web shown, which organism is both a primary consumer and a secondary consumer?

krill

The energy pyramid for an ecosystem is pictured below.

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Which type of organism can be found in all levels of the energy pyramid except the first (bottom) level?

consumers

Food chains show how living organisms obtain their food, while food webs show how multiple food chains are interrelated. \n \n Which of the following is a true statement regarding food webs?

Matter and energy are conserved as they pass through a food web.

What does the following diagram illustrate?

an energy pyramid

The energy pyramid below shows a possible amount of energy, in kilocalories, available in the organisms at each trophic level in an ecosystem.

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According to the law of conservation of energy, energy can neither be created nor destroyed. If this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

Energy is lost between each trophic level as heat.

The food chain below shows an example of how energy flows through an ecosystem.

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PLANT → MOUSE → SNAKE → HAWK

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What is the ultimate source of all of the energy that flows through this food chain?

the Sun

What happens to the chemical elements that make up the molecules of living things as they pass through a food web?

Some of their energy is stored in newly made structures.

Which type of organism generates oxygen and makes up the lowest trophic level in an energy pyramid?

producers

Which of the following living things would be found closest to the beginning of a food chain?

caterpiller

The diagram below shows an energy pyramid.

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Which of the following best explains why the number of organisms at each level decreases while moving up the energy pyramid?

The animals at each level use energy, so only a small amount of their energy is available to the next level.

Examine the following food chain and choose the organism that would best fill in the blank portion.

Wheat → Mouse → ? → Hawk

snake

An energy pyramid representing a forest ecosystem is shown below. Which level of the energy pyramid represents the forest's producers?

Grasses, Tree Leaves, Flowers, and Vines

What does the following diagram illustrate?

a food web

An energy pyramid representing a forest ecosystem is shown below. Which level of the energy pyramid represents the forest's tertiary consumers?

coyotes

In the following desert food web, what do scorpions consume?

Spiders, Moths, Lizards, Scorpions

According to the food web shown, which group below lists only secondary consumers?

fish, carnivorous zooplankton, birds

An energy pyramid representing a forest ecosystem is shown below. Which level of the energy pyramid represents the forest's secondary consumers?

Snakes and Hawks

An organism makes glucose using energy from the Sun. The organism is a

producer

Examine the energy pyramid below.

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Is it possible for the top level to be wider than the level before it?

No, it is not possible for an ecosystem to support more predators than prey.

What is the ultimate source of energy for all ecosystems?

the Sun

An energy pyramid is shown below.

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What does the energy pyramid demonstrate?

A great amount of energy is lost traveling up the energy pyramid.

Producers are autotrophic. That is, they are able to feed themselves by converting carbon dioxide from the air and light energy from the Sun into food. \n \n Consumers and decomposers are heterotrophic. This means that these organisms must obtain their food by eating other organisms or organic matter. \n \n The relationships among producers, consumers, and decomposers carrying out either autotrophic or heterotrophic nutrition are identified through

food webs

Green plants are the first living organism in a food chain. Where do plants get the energy that they pass along to the primary consumers in their food chains?

from the sun

Examine the food web below.

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If plants were removed from this ecosystem, which of the following organisms would be affected?

all of these

n a marine ecosystem, phytoplankton perform photosynthesis. Krill eat the phytoplankton, and seals, whales, and sea birds feed on the krill. Finally, great white sharks hunt and eat the seals. \n \n Which of these organisms are consumers?

sharks, krill, seals, whales, and sea birds

Which level in a food web contains the highest amount of total available energy?

producer

Food webs and food chains are two different ways that ecologists illustrate the interrelatedness of organisms in an ecosystem. What is the relationship between a food web and food chain?

Food webs illustrate multiple interrelated food chains.

PLANT → MOUSE → SNAKE → HAWK

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Based on the food chain shown above, energy in this ecosystem flows from

the mouse to the snake.

An energy pyramid representing a forest ecosystem is shown below. Which level of the energy pyramid represents the forest's primary consumers?

mice, gophers, and birds

An ecological pyramid is a type of graph that can represent the amount of biomass, the amount of energy, or the number of organisms at each trophic level in an ecosystem.

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If each block in the above diagram is proportional to the number of organisms that it represents, which of the following statements is true?

There are fewer tertiary consumers than there are secondary consumers.

What does the following diagram illustrate?

Algae → Minnows → Salmon → Bear

a food chain

The diagram below shows a food chain.

Grass → Rabbit → Weasel → Fox → Fungi

Which population would most likely increase if the weasel was removed from the food chain?

Rabbit

The diagram below shows a food web.

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Which of the following is true about the food web?

Squirrels provide foxes and owls with energy.

Examine the energy pyramid below. Why is the first block containing the plants the widest block?

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This block represents the trophic level with the most stored energy.

As energy flows through ecosystems, atoms and molecules cycle among

both the living and nonliving components of the biosphere.

Food chains show how living organisms obtain their food, while food webs show how multiple food chains are interrelated. \n \n Which of the following is a true statement regarding food webs?

Matter and energy are conserved as they pass through a food web.

Examine the following desert food web.

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What would happen to the flow of energy if all the mice were removed?

Snakes would have to eat more lizards and scorpions.

Examine the food web below.

Which organisms in the food web are primary consumers?

Examine the energy pyramid below. At what level would you add a population of rabbits?

primary consumer